The Numlock of my Apple Keyboard (white, wired) doesn't work anymore. Strange thing because it works with the guest account but not with my user account. I did change the lightdm.conf to get the numlock working for the login and it works, but nor in my user account.

Even stranger, pushing zero effects a right click?

I also tried different keyboard layouts, but it shows Numlock on (stuck on) but doesn't work.